CONTENTS 



GHAP. PAQB 



I THE FORMATION OF SOIL .... 9 



II THE PROPERTIES OF SOIL .... 24 



III THE MAIN TYPES OF SOIL .... 47 



IV AMELIORATION AND IMPROVEMENT OF LAND . 73 



V THE PRINCIPLES OF MANURING. THE NITRO- 

 GENOUS MANURES ..... 99 



VI PHOSPHATIC, NITROGENOUS-PHOSPHATIC, AND 



POTASSIC MANURES 125 



VII THE EFFECTIVE USE OF ARTIFICIAL MANURES 161 



VIII FARMYARD MANURE 173 



IX ROTATION OF CROPS 188 



X SEED 219 



BIBLIOGRAPHY 252 



INDEX 254 



